Remove some colors from an image
Posted on 2006-07-06
Hi experts !
I have a script that download an image (a radar view for rain), and resize/crop it. That part is fine. The image is saved in PNG.
What I would like to do, is to remove some color of that image ... or replace it with a common color and make it transparent. So, how can I achieve that ? Let's say, for the purpose of this example, that I have an image for which I want to make the black and white transparent.
Thanks a lot for your precious help !
Have a nice day !